Mercurial workdir get_changeset is broken

[marcinkuzminski]

As the docstring say it should return the changeset of checked out workdir but it now returns the last changeset

here's the fix for it:

marcink@/home/marcink/workspace-python/vcs # hg diff -c 5b344e89bd23                                                                                                             [21:21:40 on 27/04/2013]
diff --git a/vcs/backends/git/workdir.py b/vcs/backends/git/workdir.py
--- a/vcs/backends/git/workdir.py
+++ b/vcs/backends/git/workdir.py
@@ -15,17 +15,17 @@ class GitWorkdir(BaseWorkdir):
                 return match.groupdict()['branch']
             else:
                 raise RepositoryError("Couldn't compute workdir's branch")
         except IOError:
             # Try naive way...
             raise RepositoryError("Couldn't compute workdir's branch")

     def get_changeset(self):
-        return self.repository.get_changeset(
-            self.repository._repo.refs.as_dict().get('HEAD'))
+        wk_dir_id = self.repository._repo.refs.as_dict().get('HEAD')
+        return self.repository.get_changeset(wk_dir_id)

     def checkout_branch(self, branch=None):
         if branch is None:
             branch = self.repository.DEFAULT_BRANCH_NAME
         if branch not in self.repository.branches:
             raise BranchDoesNotExistError
         self.repository.run_git_command(['checkout', branch])
diff --git a/vcs/backends/hg/workdir.py b/vcs/backends/hg/workdir.py
--- a/vcs/backends/hg/workdir.py
+++ b/vcs/backends/hg/workdir.py
@@ -5,17 +5,18 @@ from vcs.utils.hgcompat import hg_merge


 class MercurialWorkdir(BaseWorkdir):

     def get_branch(self):
         return self.repository._repo.dirstate.branch()

     def get_changeset(self):
-        return self.repository.get_changeset()
+        wk_dir_id = self.repository._repo[None].parents()[0].hex()
+        return self.repository.get_changeset(wk_dir_id)

     def checkout_branch(self, branch=None):
         if branch is None:
             branch = self.repository.DEFAULT_BRANCH_NAME
         if branch not in self.repository.branches:
             raise BranchDoesNotExistError

         hg_merge.update(self.repository._repo, branch, False, False, None)

That breaks one test, that i really don't know how to fix...